var sPageURL='/PM.qst?action=goPage&docId=';
function pageTxt_href_onClick(atemp,isImageViewable,isBarrier)
{
	if (isBarrier=="true"){
		alert("This feature allows you to open images in a new window.\n\nQuestia's time-saving tools will save you hours of work when you become a subscriber.\n\nTo use this feature you must be a subscriber to Questia service. To view your\nsubscription options click on the subscribe button");
		return false;
	}
	
	if (atemp.indexOf('/') > 0) {
		atemp2=atemp.split('/');
		alink=atemp2[2];
	} else {
		alink=atemp;
	}

	if (alink.indexOf('.fpx') < 0) // Standard files
	{
		if (alink.indexOf('#') < 0)
		{
			if (isDigit(alink.charAt(0)))
			{
				window.location=sPageURL+alink;
			}
			else if (alink.charAt(0)=='i')
			{
				window.location=sPageURL+alink.substring(1,alink.length);
			}
			else
			{
				if(atemp.indexOf('http')<0)
					atemp = 'http://'+atemp;
				window.open(atemp,'external','',true);
			}
			return false;
		}
		else
		{
			return true;
		}
	}
	else // serve the fpx image
	{
		var	i = alink.indexOf(".fpx");
		var	temp = alink.substring(1, i);

		if (i < 3)
		{
		return false;
		}

		var	c = temp.charAt(0);
		if (!isLetter(c))
		{
			return false;
		}

		for (i = 1; i < temp.length; i++)
		{
			c	= temp.charAt(i);
			if (!isDigit(c))
			{
				break;
			}
		}

		alink	= alink.substring(1, i+1) + "/" + alink.substring(1,alink.length);
		
		var urlStr	= "/ImageViewer.qst?action=1&docId=" + questia.Dictionary.scholar.rootId + "&imageName=" + alink + "&pageNo=" + questia.Dictionary.scholar.pageNumber + "&isImageViewable=" + isImageViewable;
		var xpos=(screen.availWidth-670)/2;
		var ypos=(screen.availHeight-510)/2;
		xwin=window.open(urlStr,'imageinfo','left='+xpos+',top='+ypos+',width=750,height=550,resizable,scrollbars',false);
	}
	
	return false;
}
function isDigit(c)
{
	switch (c)
	{
		case '0':
		case '1':
		case '2':
		case '3':
		case '4':
		case '5':
		case '6':
		case '7':
		case '8':
		case '9':
			return true;
		break;
		default:
			return false;
		break;
	}
}

function isLetter(c)
{
	c=c.toLowerCase();
	switch (c)
	{
		case 'a':
		case 'b':
		case 'c':
		case 'd':
		case 'e':
		case 'f':
		case 'g':
		case 'h':
		case 'i':
		case 'j':
		case 'k':
		case 'l':
		case 'm':
		case 'n':
		case 'o':
		case 'p':
		case 'q':
		case 'r':
		case 's':
		case 't':
		case 'u':
		case 'v':
		case 'w':
		case 'x':
		case 'y':
		case 'z':
			return true;
		break;
		default:
			return false;
		break;
	}
}