img1on = new Image( ); 
img1on.src = "image/leftmenu01_on.gif"; 
img1off = new Image( ); 
img1off.src = "image/leftmenu01_off.gif"; 

img2on = new Image( ); 
img2on.src = "image/leftmenu02_on.gif"; 
img2off = new Image( ); 
img2off.src = "image/leftmenu02_off.gif"; 

img3on = new Image( ); 
img3on.src = "image/leftmenu03_on.gif"; 
img3off = new Image( ); 
img3off.src = "image/leftmenu03_off.gif"; 

img4on = new Image( ); 
img4on.src = "image/leftmenu04_on.gif"; 
img4off = new Image( ); 
img4off.src = "image/leftmenu04_off.gif"; 

img5on = new Image( ); 
img5on.src = "image/leftmenu05_on.gif"; 
img5off = new Image( ); 
img5off.src = "image/leftmenu05_off.gif"; 

function imgOn(imgName) { 
document [imgName].src = eval(imgName + "on.src"); 
} 

function imgOff(imgName) { 
document [imgName].src = eval(imgName + "off.src"); 
}

function Move(num) {
	if (num == 1) URL = 'http://www.skchemicals.com/english/product/petro/pta/ptad/'; //PTA
	if (num == 2) URL = 'http://www.skchemicals.com/english/product/petro/pets/pet/'; //PET
	if (num == 3) URL = 'http://www.skchemicals.com/english/product/petro/pets/high/'; //PETG
	if (num == 4) URL = 'http://www.skchemicals.com/english/product/special/ind/poly/'; //Poly
	if (num == 5) URL = 'http://www.skchemicals.com/english/product/special/ind/thane/'; // Urethane
	
	window.open(URL,'ppop','width=890,height=672,resize=no');
}