/**
 * Open exernal links in new window
 */
function externalLinks() {
	if (!document.getElementsByTagName) return;
 
	var anchors = document.getElementsByTagName("a");
	for (var i=0; i<anchors.length; i++) 
 	{
 		var anchor = anchors[i];
   		var attr = String(anchor.getAttribute("rel"));
   		if (anchor.getAttribute("href") && attr.toLowerCase().match("external"))
    		anchor.target = "_blank";
 	}
}
Event.observe(window,'load', externalLinks, false);

/**
 * Hide flash messages
 */
var allPageTags = new Array();
		function hideFlash()
		{
		   var theClass = 'message';
		   var allPageTags=document.getElementsByTagName("div");
		
		   for (i=0; i<allPageTags.length; i++)
		   {
			  if (allPageTags[i].className==theClass)
			  {
				 allPageTags[i].style.display='none';
			  }
		   }
		}
/**
 * Effects for buttons
 */		
function changeClass(id,className)
			{
				var elm = document.getElementById(id);
				if(elm)
				{
					elm.className = className;
				}
			}