function totale(){
		var righe=0;
		var nodes=document.getElementsByTagName("tbody")[0].childNodes;
		for(i=0;i<nodes.length;i++){
			if (nodes[i].tagName=="tr" || nodes[i].tagName=="TR"){
				righe++;
			}
		}
		return righe;
	}
	
	function colora_righe(){	
		var trs=[];
		trs=document.getElementsByTagName("tr");
		for(i=1;i<trs.length;i+=2){
			trs[i].setAttribute("class", "modello pari");
		}
	}

	/* window.onload=function(){colora_righe();}