function setNavClassesComp(on,off1,off2,off3) {
	if (on == '1') {
	 document.getElementById('dress1').style.display = 'block';
	 document.getElementById('dress2').style.display = 'none';
	 document.getElementById('dress3').style.display = 'none';
	 document.getElementById('dress4').style.display = 'none';	 
	}
	if (on == '2') {
	 document.getElementById('dress2').style.display = 'block';
	 document.getElementById('dress1').style.display = 'none';
	 document.getElementById('dress3').style.display = 'none';
	 document.getElementById('dress4').style.display = 'none';		 
	}
	if (on == '3') {
	 document.getElementById('dress3').style.display = 'block';
	 document.getElementById('dress2').style.display = 'none';
	 document.getElementById('dress1').style.display = 'none';
	 document.getElementById('dress4').style.display = 'none';		 
	}
	if (on == '4') {
	 document.getElementById('dress4').style.display = 'block';
	 document.getElementById('dress3').style.display = 'none';	 
	 document.getElementById('dress2').style.display = 'none';
	 document.getElementById('dress1').style.display = 'none';
	}	
   }
   
   function callPic1() {
    setNavClassesComp(1,2,3,4); return false;
   }
   function callPic2() {
    setNavClassesComp(2,1,3,4); return false;
   }
   function callPic3() {
    setNavClassesComp(3,1,2,4); return false;
   }
   function callPic4() {
    setNavClassesComp(4,3,1,2); return false;
   }