var offsetfrommouse = [15, 10];
var myimageheight = 250;
var myimagewidth = 250;

if (document.getElementById || document.all) {
    document.write('<div id="DynPreviewPlace">');
    document.write('</div>')
}
function gettrailobj() {
    if (document.getElementById) return document.getElementById("DynPreviewPlace").style;
    else if (document.all) return document.all.DynPreviewPlace.style
}
function gettrailobjnostyle() {
    if (document.getElementById) return document.getElementById("DynPreviewPlace");
    else if (document.all) return document.all.DynPreviewPlace
}
function truebody() {
    return (!window.opera && document.compatMode && document.compatMode != "BackCompat") ? document.documentElement: document.body
}
//showtrail and followmouse functions are not used any more. has to be removed - Ravi
function showtrail(imagename, title, width, height) {
    document.onmousemove = followmouse;
    (width == 0) ? width = myimagewidth: '';
    (height == 0) ? height = myimageheight: '';
    width += 15;
    height += 30;
    myimageheight = height;
    myimagewidth = width;
    newHTML = '<div id="DynPreviewContainerFull" class="DynPreviewWraper" style="width:' + width + 'px;"><div id="DynPreviewContainer"><div class="DynPreviewLoader"><div align="center">Loading preview...</div><div class="DynPreviewLoaderBg"><div id="DynProgress"> </div></div></div></div>';
    //newHTML = '<div class="DynPreviewWraper" style="width:' + width + 'px;">';
    newHTML = newHTML + '<h2 class="DynPreviewTitle">' + ' ' + title + '</h2>';
    newHTML = newHTML + '<div class="DynPreviewTempLoad"><img onload="javascript:remove_loading();" src="' + imagename + '" border="0" alt="" /></div>';
    //newHTML = newHTML + '<div class="DynPreviewTempLoad"><img src="' + imagename + '" border="0" alt="" /></div>';
    newHTML = newHTML + '</div>';
    gettrailobjnostyle().innerHTML = newHTML;
    gettrailobj().display = "block"
}
function hidetrail() {
    if(document.getElementById('dropmenuiframe')) {
		document.getElementById('dropmenuiframe').style.display = "none";
    }    
    gettrailobj().innerHTML = " ";
    gettrailobj().display = "none";
    document.onmousemove = "";
    gettrailobj().left = "-500px"    
}
function followmouse(e) {
    var xcoord = offsetfrommouse[0];
    var ycoord = offsetfrommouse[1];
    var docwidth = document.all ? truebody().scrollLeft + truebody().clientWidth: pageXOffset + window.innerWidth - 15;
    var docheight = document.all ? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(window.innerHeight);
    if (typeof e != "undefined") {
        if (docwidth - e.pageX < myimagewidth + 2 * offsetfrommouse[0]) {
            xcoord = e.pageX - xcoord - myimagewidth
        } else {
            xcoord += e.pageX
        }
        
        var cltY = e.pageY;
        while (window.innerHeight < cltY) {
        	cltY = cltY - window.innerHeight;
        }
        if(cltY < 500) {
        	ycoord += e.pageY;
        }
        else if (window.innerHeight < (cltY+myimageheight+100)) {
        	ycoord += e.pageY - 250;
        }
        else {
        	ycoord += e.pageY
        }
        
        /*if (docheight - e.pageY < (myimageheight + 110)) {
            ycoord += e.pageY - Math.max(0, (110 + myimageheight + e.pageY - docheight - truebody().scrollTop))
        } else {
            ycoord += e.pageY
        }*/
        //ycoord += e.pageY        
    } else if (typeof window.event != "undefined") {
        if (docwidth - event.clientX < myimagewidth + 2 * offsetfrommouse[0]) {
            xcoord = event.clientX + truebody().scrollLeft - xcoord - myimagewidth
        } else {
            xcoord += truebody().scrollLeft + event.clientX
        }
        /*if (docheight - event.clientY < myimageheight) {
            ycoord += truebody().scrollTop + event.clientY - myimageheight;        	
        } else {
            ycoord += truebody().scrollTop + event.clientY
        }*/
        
        var cltY = event.clientY;
        while (window.screen.height < cltY) {
        	cltY = cltY - docheight;
        }
        if (window.screen.height < (cltY+myimageheight)) {
        	ycoord = window.screen.height - 450;
        }
        else {
        	ycoord = truebody().scrollTop + event.clientY
        }
        
        /*if (docheight - event.clientY < (myimageheight + 110)) {
            ycoord += event.clientY + truebody().scrollTop - Math.max(0, (110 + myimageheight + event.clientY - docheight))
        } else {
            ycoord += truebody().scrollTop + event.clientY
        }*/        
    }
    var docwidth = document.all ? truebody().scrollLeft + truebody().clientWidth: pageXOffset + window.innerWidth - 15;
    var docheight = document.all ? Math.max(truebody().scrollHeight, truebody().clientHeight) : Math.max(document.body.offsetHeight, window.innerHeight);
    if (ycoord < 0) {
        ycoord = ycoord * -1
    }
    if(document.getElementById('dropmenuiframe')) {
	    document.getElementById('dropmenuiframe').style.left = xcoord + "px";
	    document.getElementById('dropmenuiframe').style.top = ycoord + "px";    
	    document.getElementById('dropmenuiframe').style.height = document.getElementById('DynPreviewContainerFull').offsetHeight;
	    document.getElementById('dropmenuiframe').style.width = document.getElementById('DynPreviewContainerFull').style.width;
	    document.getElementById('dropmenuiframe').style.display = "block";
    }	    
    gettrailobj().left = xcoord + "px";
    gettrailobj().top = ycoord + "px"    
}
var t_id = setInterval(animate, 20);
var pos = 0;
var dir = 2;
var len = 0;
function animate() {
    var elem = document.getElementById('DynProgress');
    if (elem != null) {
        if (pos == 0) len += dir;
        if (len > 32 || pos > 79) pos += dir;
        if (pos > 79) len -= dir;
        if (pos > 79 && len == 0) pos = 0;
        elem.style.left = pos;
        elem.style.width = len
    }
}
function remove_loading() {
    this.clearInterval(t_id);
    var targelem = document.getElementById('DynPreviewContainer');
    targelem.style.display = 'none';
    targelem.style.visibility = 'hidden';
    var t_id = setInterval(animate, 60)
}

function showtrail1(imagename, title, width, height,selId,imageHeight) {
	width += 15;
    height += 30;
    if(width>=500) {
	    if(selId.indexOf('lp') != -1 || selId.indexOf('fp') != -1 || selId.indexOf('cp') != -1 || selId.indexOf('np') != -1 || selId.indexOf('sps') != -1 || selId.indexOf('dp') != -1) {
			width += 50;
	  	}
    }
    newHTML = '<div id="DynPreviewContainerFull" class="DynPreviewWraper" style="width:' + (width-50) + 'px;"><div id="DynPreviewContainer"><div class="DynPreviewLoader"><div align="center">Loading preview...</div><div class="DynPreviewLoaderBg"><div id="DynProgress"> </div></div></div></div>';
    newHTML = newHTML + '<h2 class="DynPreviewTitle">' + ' ' + title + '</h2>';
    newHTML = newHTML + '<div class="DynPreviewTempLoad"><img onload="javascript:remove_loading();" src="' + imagename + '" border="0" alt="" /></div>';
    newHTML = newHTML + '</div>';
    gettrailobjnostyle().innerHTML = newHTML;    
    gettrailobj().display = "block";
    
    offsetNow = getOffsetNow(document.getElementById(selId));    
    var leftpos = parseInt(document.getElementById(selId).offsetWidth) + offsetNow[0];
    
    pageValues = tb_getPageSize();
  	
  	if((leftpos + 500) > pageValues[0]) {
  		leftpos = offsetNow[0] - 476;  
  		if(selId.indexOf('lp') != -1 || selId.indexOf('fp') != -1 || selId.indexOf('cp') != -1 || selId.indexOf('np') != -1 || selId.indexOf('sps') != -1 || selId.indexOf('dp') != -1) {
	  		 leftpos -= 50;
	  	}
  	}
  	else {
  		leftpos = leftpos + 10;
  	}
    var toppos = offsetNow[1]; 
    var scrollTopVal = document.body.scrollTop || document.documentElement.scrollTop;
    var scrollHeightVal = document.body.scrollHeight || document.documentElement.scrollHeight;
    
    var displayDivHeight = imageHeight + 61;
    
    if((toppos + displayDivHeight) > scrollHeightVal) {
    	toppos = scrollHeightVal - displayDivHeight - (scrollHeightVal-(pageValues[1]+scrollTopVal));
    }
    else if((toppos + displayDivHeight) > (scrollTopVal+pageValues[1])) {
    	toppos = (scrollTopVal+pageValues[1]) - 5 - displayDivHeight;
    }
    else if(toppos < scrollTopVal) {
    	toppos = scrollTopVal;
    }
    
    if(document.getElementById('dropmenuiframe')) {
	    document.getElementById('dropmenuiframe').style.left = leftpos + "px";
	    document.getElementById('dropmenuiframe').style.top = toppos + "px";    
	    document.getElementById('dropmenuiframe').style.height = document.getElementById('DynPreviewContainerFull').offsetHeight;
	    document.getElementById('dropmenuiframe').style.width = document.getElementById('DynPreviewContainerFull').style.width;
	    document.getElementById('dropmenuiframe').style.display = "block";
    }	     
    gettrailobj().left = leftpos + "px";
    gettrailobj().top = toppos + "px"; 
}

function getOffsetNow(theElement) {
	var positionX = 0;
  	var positionY = 0;
  	while (theElement != null) {
    	positionX += parseInt(theElement.offsetLeft);
    	positionY += parseInt(theElement.offsetTop);
    	theElement = theElement.offsetParent;
  	}
  	return [positionX, positionY];
}

function tb_getPageSize() {
	var de = document.documentElement;
	var w = window.innerWidth || self.innerWidth || (de&&de.clientWidth) || document.body.clientWidth;
	var h = window.innerHeight || self.innerHeight || (de&&de.clientHeight) || document.body.clientHeight;	
	arrayPageSize = [w,h];
	return arrayPageSize;
}

function showtrail2(imagename, title, width, height) {
	var imageHeight = height;
	var selId = 'years_at_asd';
	newHTML = '<div id="DynPreviewContainerFull" class="DynPreviewWraper" style="width:' + (width) + 'px;"><div id="DynPreviewContainer"><div class="DynPreviewLoader"><div align="center">Loading preview...</div><div class="DynPreviewLoaderBg"><div id="DynProgress"> </div></div></div></div>';
    newHTML = newHTML + '<h2 class="DynPreviewTitle">' + ' ' + title + '</h2>';
    newHTML = newHTML + '<div class="DynPreviewTempLoad"><img onload="javascript:remove_loading();" src="' + imagename + '" border="0" alt="" /></div>';
    newHTML = newHTML + '</div>';
    gettrailobjnostyle().innerHTML = newHTML;    
    gettrailobj().display = "block";
    
    offsetNow = getOffsetNow(document.getElementById(selId));    
    var leftpos = parseInt(document.getElementById(selId).offsetWidth) + offsetNow[0];
    pageValues = tb_getPageSize();
    
  	if((leftpos + 355) > pageValues[0]) {
  		leftpos = offsetNow[0] - 355;
  	}
  	
    var toppos = offsetNow[1]; 
    var scrollTopVal = document.body.scrollTop || document.documentElement.scrollTop;
    var scrollHeightVal = document.body.scrollHeight || document.documentElement.scrollHeight;
    
    var displayDivHeight = imageHeight + 30;
    
    if((toppos + displayDivHeight) > scrollHeightVal) {
    	toppos = scrollHeightVal - displayDivHeight - (scrollHeightVal-(pageValues[1]+scrollTopVal));
    }
    else if((toppos + displayDivHeight) > (scrollTopVal+pageValues[1])) {
    	toppos = (scrollTopVal+pageValues[1]) - 5 - displayDivHeight;
    }
    else if(toppos < scrollTopVal) {
    	toppos = scrollTopVal;
    }
    
    if(document.getElementById('dropmenuiframe')) {
	    document.getElementById('dropmenuiframe').style.left = leftpos + "px";
	    document.getElementById('dropmenuiframe').style.top = toppos + "px";    
	    document.getElementById('dropmenuiframe').style.height = document.getElementById('DynPreviewContainerFull').offsetHeight;
	    document.getElementById('dropmenuiframe').style.width = document.getElementById('DynPreviewContainerFull').style.width;
	    document.getElementById('dropmenuiframe').style.display = "block";
    }	     
    gettrailobj().left = leftpos + "px";
    gettrailobj().top = toppos + "px"; 
}