function showCalc1(){
			var mc_s= document.getElementById("mc");
			val = mc_s.options[mc_s.selectedIndex].value;
			getCalc(val);
		}

		function showCalc2(){
			var ic_s= document.getElementById("ic");
			val = ic_s.options[ic_s.selectedIndex].value;
			getCalc(val);
		}

		function showCalc3(){
			var rs_s= document.getElementById("rs");
			val = rs_s.options[rs_s.selectedIndex].value;
			getCalc(val);
		}

		function showCalc4(){
			var tc_s= document.getElementById("tc");
			val = tc_s.options[tc_s.selectedIndex].value;
			getCalc(val);
		}

		function showCalc5(){
			var sc_s= document.getElementById("sc");
			val = sc_s.options[sc_s.selectedIndex].value;
			getCalc(val);
		}

		function showCalc6(){
			var pf_s= document.getElementById("pf");
			val = pf_s.options[pf_s.selectedIndex].value;
			getCalc(val);
		}

		function showCalc7(){
			var inc_s= document.getElementById("inc");
			val = inc_s.options[inc_s.selectedIndex].value;
			getCalc(val);
		}

		function getCalc(url) {
			document.getElementById("scalc").src=url;
		}