function color_tr_1(){
	var tabla = document.getElementById('content_1');
	var filas = tabla.getElementsByTagName('tr');
	var num_filas = filas.length;
	for (i = 0;i < num_filas; i++){
		filas[i].onmouseover = function(){
			this.style.backgroundColor = "#ece7d3";
		}
		filas[i].onmouseout = function(){
			this.style.backgroundColor = "#fff9ef";
		}
	}
}

function color_tr_2(){
	var tabla = document.getElementById('content_2');
	var filas = tabla.getElementsByTagName('tr');
	var num_filas = filas.length;
	for (i = 0;i < num_filas; i++){
		filas[i].onmouseover = function(){
			this.style.backgroundColor = "#ece7d3";
		}
		filas[i].onmouseout = function(){
			this.style.backgroundColor = "#fff9ef";
		}
	}
}