function scanforlinks() {
			links = document.getElementsByTagName('a');

			for (i=0; i < links.length; i++) {
				var linkval = links[i].getAttribute('href');
				var pdfimg=document.createElement('img'); pdfimg.setAttribute('src','images/pdf.gif');
				var docimg=document.createElement('img'); docimg.setAttribute('src','images/icon_word.gif');
				var xlsimg=document.createElement('img'); xlsimg.setAttribute('src','images/icon_excel.gif');
				var pptimg=document.createElement('img'); pptimg.setAttribute('src','images/icon_ppt.gif');
				var extimg=document.createElement('img'); extimg.setAttribute('src','images/icon_world.gif');
				var mailimg=document.createElement('img'); mailimg.setAttribute('src','images/icon_mail.gif');				
				if (linkval != null && links[i].getElementsByTagName('img').length==0){
						if (linkval.toLowerCase().substring((linkval.length-4), linkval.length).indexOf('.pdf')== 0) {
							links[i].appendChild(pdfimg);
							links[i].target = '_blank';
						} else if (linkval.toLowerCase().substring((linkval.length-4), linkval.length).indexOf('.doc')==0) {
							links[i].appendChild(docimg);
							links[i].target = '_blank';
						} else if (linkval.toLowerCase().substring((linkval.length-4), linkval.length).indexOf('.xls')==0) {
							links[i].appendChild(xlsimg);
							links[i].target = '_blank';
						} else if (linkval.toLowerCase().substring((linkval.length-4), linkval.length).indexOf('.ppt')==0) {
							links[i].appendChild(pptimg);
							links[i].target = '_blank';
						}  else if (linkval.indexOf('mailto:') == 0) {
							links[i].appendChild(mailimg);
						}
					}
				}	
			}