var oldonload = window.onload;
var target_blank_className = "link_new_win";

function maketargetblank()
{
	var classElements = new Array();
	var	node = document;
	var	tag = 'a';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp('(^|\\s)'+target_blank_className+'(\\s|$)');
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	if (classElements.length > 0)
    {
        for (var ii in classElements)
        {
            if (!isNaN(ii))
            {
                classElements[ii].target = "_blank";
            }
        }
    }
}

if (typeof window.onload != 'function') 
{
    window.onload = maketargetblank;
}
else 
{
    window.onload = function() 
    {
        oldonload();
        maketargetblank();
    }
}