function addStylesheet(url) {
    var stylesheet = document.createElement('link');
    stylesheet.rel = 'stylesheet';
    stylesheet.type = 'text/css';
    stylesheet.href =  url;
    (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(stylesheet);
}

function addScript(url) {
  var script = document.createElement('script');
  script.type = 'text/javascript';
  script.async = 'async';
  script.src = url;
  (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(script); 
}

//PNG FIX FOR IE
var clear="/images/clear.gif", pngfix = function() {var els=jQuery(".fixpng"),ip=/(logo|find).*png/i,al="progid:DXImageTransform.Microsoft.AlphaImageLoader(src='",i=els.length,uels=new Array(),c=0;while(i-->0){if(els[i].className.match(/unitPng/)){uels[c]=els[i];c++;}}if(uels.length==0)pfx(els);else pfx(uels);function pfx(els){i=els.length;while(i-->0){var el=els[i],es=el.style,elc=el.currentStyle,elb=elc.backgroundImage;if(el.src&&el.src.match(ip)&&!es.filter){es.height=el.height;es.width=el.width;es.filter=al+el.src+"',sizingMethod='crop')";el.src=clear;}else{if(elb.match(ip)){var path=elb.split('"'),rep=(elc.backgroundRepeat=='no-repeat')?'crop':'scale',elkids=el.getElementsByTagName('*'),j=elkids.length;es.filter=al+path[1]+"',sizingMethod='"+rep+"')";es.height=el.clientHeight+'px';es.backgroundImage='none';if(j!=0){if(elc.position!="absolute")es.position='static';while(j-->0)if(!elkids[j].style.position)elkids[j].style.position="relative";}}}}};}

function windowResizeHandler(){
	var resetMarginLeft = function(element) {
		var marginLeft=element.css("margin-left");
		element.css("margin-left",0);
		element.css("margin-left",marginLeft);
	}

	var resetMarginLeftTo50 = function(element) {
		element.css("margin-left",0);
		element.css("margin-left","-50%");
	}

	var elementsToResize = [{"selector":"#main","callback":resetMarginLeft},{"selector":"form.search .colmid","callback":resetMarginLeft},{"selector":"form.search .colleft","callback":resetMarginLeftTo50}];
	
	jQuery.each(elementsToResize, function(index,elementToResize) {
		jQuery(elementToResize).each(function(){
			elementToResize.callback(jQuery(elementToResize.selector));
		});
	});
}

jQuery(document).ready(function(){
	// IE BugFix
	if (jQuery.browser.msie) {	
		if (jQuery.browser.version<8) jQuery(window).resize(windowResizeHandler);
		if (jQuery.browser.version<7) pngfix();
	}
});